I am personally glad it's lacks the purple and gold together (despite the fact I'm an LSU grad)--I don't care for Mardi Gras and Louisiana has much more to offer otherwise. I think anyway that, like many other state tartans, it tries to capture the natural beauty of the state. Perhaps there could be a Mardi Gras tartan designed though. :-)
Of course, there's Mardi Gras and REAL Mardi Gras, the way the Cajuns celebrate it...
Bookmarks